Bug 47421 - UCS updates destroy boot loader configuration
UCS updates destroy boot loader configuration
Status: NEW
Product: UCS
Classification: Unclassified
Component: Grub
UCS 4.3
Other Linux
: P5 normal (vote)
: ---
Assigned To: UCS maintainers
UCS maintainers
Depends on:
  Show dependency treegraph
Reported: 2018-07-31 12:22 CEST by Nico Gulden
Modified: 2018-07-31 16:27 CEST (History)
0 users

See Also:
What kind of report is it?: Bug Report
What type of bug is this?: 7: Crash: Bug causes crash or data loss
Who will be affected by this bug?: 1: Will affect a very few installed domains
How will those affected feel about the bug?: 3: A User would likely not purchase the product
User Pain: 0.120
Enterprise Customer affected?:
School Customer affected?:
ISV affected?:
Waiting Support:
Flags outvoted (downgraded) after PO Review:
Ticket number: 2018072721000187
Bug group (optional): External feedback
Max CVSS v3 score:


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Description Nico Gulden univentionstaff 2018-07-31 12:22:20 CEST
A user reports that UCS updates destroy the bootloader settings.

An upgrade from UCS 4.2-3 to UCS 4.3-1, as well as, package updates on UCS 4.3-1 destroyed the boot loader configuration. Both systems did not boot anymore and resulted in a blinking prompt.

The partitioning is quite simple:

* Swap (dev/sda1)
* / (dev/sda2)
* Additional hard disk (/dev/sdb) for data, mounted at /media/data
The boot loader is installed in the MBR on /dev/sda.

The user restored the boot loader with Super Grub2 CD and the instructions from https://help.univention.com/t/boot-ucs-system-via-super-grub2-disk/6409
Comment 1 Nico Gulden univentionstaff 2018-07-31 16:27:20 CEST
The user executed the updates with apt-get upgrade (for package update) and apt-get dist-upgrade for the upgrade to the next UCS version.